Support overflow-wrap:break-word on simple line path

[Antti Koivisto]

This makes some pure text documents use simple line layout path.

[Antti Koivisto]

Created attachment 216677 [details]
patch

[Build Bot]

Comment on attachment 216677 [details]
patch

Attachment 216677 [details] did not pass mac-wk2-ews (mac-wk2):
Output: http://webkit-queues.appspot.com/results/22888755

New failing tests:
fast/shapes/shape-inside/shape-inside-dynamic-nested.html
accessibility/aria-help.html
http/tests/misc/acid3.html
fast/parser/entity-comment-in-textarea.html

[Build Bot]

Created attachment 216688 [details]
Archive of layout-test-results from webkit-ews-10 for mac-mountainlion-wk2

The attached test failures were seen while running run-webkit-tests on the mac-wk2-ews.
Bot: webkit-ews-10  Port: mac-mountainlion-wk2  Platform: Mac OS X 10.8.5

[Build Bot]

Comment on attachment 216677 [details]
patch

Attachment 216677 [details] did not pass mac-ews (mac):
Output: http://webkit-queues.appspot.com/results/22888765

New failing tests:
fast/shapes/shape-inside/shape-inside-dynamic-nested.html
accessibility/aria-help.html
http/tests/misc/acid3.html
fast/parser/entity-comment-in-textarea.html

[Build Bot]

Created attachment 216693 [details]
Archive of layout-test-results from webkit-ews-07 for mac-mountainlion

The attached test failures were seen while running run-webkit-tests on the mac-ews.
Bot: webkit-ews-07  Port: mac-mountainlion  Platform: Mac OS X 10.8.5

[Andreas Kling]

Comment on attachment 216677 [details]
patch

View in context: https://bugs.webkit.org/attachment.cgi?id=216677&action=review

> Source/WebCore/rendering/SimpleLineLayout.cpp:388
> +                    for (unsigned breakEnd = lineStart + 1; breakEnd <= wordEnd; ++breakEnd) {
> +                        float splitWidth = measureWord(textRenderer, text, textLength, lineStart, breakEnd, 0, collapseWhitespace, font, tabWidth, spaceWidth);

I bet there's a more efficient way of doing this. The complexity:benefit ratio seems good as-is though.

[Antti Koivisto]

Created attachment 216792 [details]
patch 2

- measure character-by-character to avoid n^2. This is what line boxes do too.
- if break-word generates space-only line set its width to zero
- handle shapeInside style invalidation correctly

[Andreas Kling]

Comment on attachment 216792 [details]
patch 2

r=me!

[Antti Koivisto]

https://trac.webkit.org/r159192